Add function to extract bkey length

src/libckpool.c

@@ -1280,6 +1280,13 @@ char *bkey_object(void)
 	return bkey;
 }
 
+/* Extract bkey length */
+uint32_t bkey_len(char *bkey)
+{
+	uint32_t *lenptr = bkey_lenptr(bkey);
+	return le32toh(*lenptr);
+}
+
 /* Add binary from hex to a bkey message */
 void _bkey_add_hex(char **bkey, const char *key, const char *hex, const char *file, const char *func, const int line)
 {

src/libckpool.h

@@ -320,6 +320,7 @@ typedef struct unixsock unixsock_t;
 
 
 char *bkey_object(void);
+uint32_t bkey_len(char *bkey);
 void _bkey_add_hex(char **bkey, const char *key, const char *hex, const char *file, const char *func, const int line);
 #define bkey_add_hex(bkey, key, hex) _bkey_add_hex(&(bkey), key, hex, __FILE__, __func__, __LINE__)
 void _bkey_add_bin(char **bkey, const char *key, const char *bin, const int blen, const char *file, const char *func, const int line);